Sound acquisition via the extraction of geometrical information from direction of arrival estimates

US9396731B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Juergen Herre · Erlangen, DE
• Fabian Kuech · Erlangen, DE
• Markus Kallinger · Erlangen, DE
• Giovanni Del Galdo · Martinroda, DE
• Oliver Thiergart · Forchheim, DE
• Dirk Mahne · Nuremberg, DE
• Achim Kuntz · Hemhofen, DE
• Michael Kratschmer · Erlangen, DE
• Alexandra Craciun · Erlangen, DE

Key dates

• Filing date: May 29, 2013
• Grant date: Jul 19, 2016
• Expiry date: Nov 13, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04R2430/21
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

An apparatus for generating an audio output signal to simulate a recording of a virtual microphone at a configurable virtual position in an environment includes a sound events position estimator and an information computation module. The former is adapted to estimate a sound source position indicating a position of a sound source in the environment, wherein the sound events position estimator is adapted to estimate the sound source position based on first and second direction information provided by first and second real spatial microphones, respectively, located at first and second real microphone positions in the environment, respectively. The information computation module is adapted to generate the audio output signal based on a first recorded audio input signal, on the first real microphone position, on the virtual position of the virtual microphone, and on the sound source position.